[58] So also in the vision of the women bearing the ephah, before quoted, "the wind was in their wings," not wings "of a stork," as in our version; but "_milvi_," of a kite, in the Vulgate, or perhaps more accurately still in the Septuagint, "hoopoe," a bird connected typically with the power of riches by many traditions, of which that of its petition for a crest of gold is perhaps the most interesting. The "Birds" of Aristophanes, in which its part is principal, is full of them; note especially the "fortification of the air with baked bricks, like Babylon," l. 550; and, again, compare the Plutus of Dante, who (to show the influence of riches in destroying the reason) is the only one of the powers of the Inferno who cannot speak intelligibly; and also the cowardliest; he is not merely quelled or restrained, but literally "collapses" at a word; the sudden and helpless operation of mercantile panic being all told in the brief metaphor, "as the sails, swollen with the wind, fall, when the mast breaks." This being the real nature of capital, it follows that there are two kinds of true production, always going on in an active State; one of seed, and one of food; or production for the Ground, and for the Mouth; both of which are by covetous persons thought to be production only for the granary; whereas the function of the granary is but intermediate and conservative, fulfilled in distribution; else it ends in nothing but mildew, and nourishment of rats and worms. And since production for the Ground is only useful with future hope of harvest, all _essential_ production is for the Mouth; and is finally measured by the mouth; hence, as I said above, consumption is the crown of production; and the wealth of a nation is only to be estimated by what it consumes. The want of any clear sight of this fact is the capital error, issuing in rich interest and revenue of error among the political economists. Their minds are continually set on money-gain, not on mouth-gain; and they fall into every sort of net and snare, dazzled by the coin-glitter as birds by the fowler's glass; or rather (for there is not much else like birds in them) they are like children trying to jump on the heads of their own shadows; the money-gain being only the shadow of the true gain, which is humanity.